Dollar-cost averaging is a strategy for building wealth through investing that involves regularly purchasing a fixed dollar amount of securities at predetermined intervals, regardless of how the market is performing. This approach allows for a more consistent and disciplined approach to investing, reducing the impact of market fluctuations on overall returns. By investing a fixed amount at regular intervals, investors can potentially benefit from buying more shares when prices are lower and fewer shares when prices are higher. This approach to investing is often recommended for those looking to build long-term wealth and minimize risk.